Highly Conductive Anion-Exchange Membranes Based on Cross-Linked Poly(norbornene): Vinyl Addition Polymerization
Journal Article
·
· ACS Applied Energy Materials
- Georgia Institute of Technology, Atlanta, GA (United States)
Cross-linked (XL) anion-exchange membranes (AEMs) synthesized by vinyl addition polymerization of norbornene were prepared for use in anion-exchange membrane electrochemical devices, including fuel cells and electrolyzers. Tetrablock copolymers composed of an all-hydrocarbon backbone with a very high ion-exchange capacity (IEC), 3.46 mequiv/g, were synthesized. Light cross-linking was found to be adequate for providing critical control over unwanted water uptake. This enabled use of very high IEC membranes. Without light cross-linking, the unwanted water uptake would cause swelling and softening of the membrane. The best performing membrane had no significant drop in ionic conductivity over 1000 h of aging in 1 M NaOH at 80 °C and a record high ionic conductivity of 198 mS/cm at 80 °C (for a chemically stable AEM). The number of bound and free water molecules per ion pair is described along with ion mobility comparisons to previous materials. Here, the membranes are suitable for electrochemical devices and were used in AEM fuel cells
- Research Organization:
- Georgia Institute of Technology, Atlanta, GA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- EE0008833
- OSTI ID:
- 2568173
- Journal Information:
- ACS Applied Energy Materials, Journal Name: ACS Applied Energy Materials Journal Issue: 4 Vol. 2; ISSN 2574-0962
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ionomer Optimization for Water Uptake and Swelling in Anion Exchange Membrane Electrolyzer: Oxygen Evolution Electrode
Ionomer Optimization for Water Uptake and Swelling in Anion Exchange Membrane Electrolyzer: Hydrogen Evolution Electrode
Ionomer Optimization for Water Uptake and Swelling in Anion Exchange Membrane Electrolyzer: Hydrogen Evolution Electrode
Journal Article
·
Tue Dec 15 19:00:00 EST 2020
· Journal of the Electrochemical Society
·
OSTI ID:2568169
Ionomer Optimization for Water Uptake and Swelling in Anion Exchange Membrane Electrolyzer: Hydrogen Evolution Electrode
Journal Article
·
Sun Jan 31 23:00:00 EST 2021
· Journal of the Electrochemical Society
·
OSTI ID:1848903
Ionomer Optimization for Water Uptake and Swelling in Anion Exchange Membrane Electrolyzer: Hydrogen Evolution Electrode
Journal Article
·
Tue Feb 02 19:00:00 EST 2021
· Journal of the Electrochemical Society
·
OSTI ID:2568170